Heating-furnace



N. F. EGLER.

' HEATING FURNACE.

APPLICATION HLED JUNE 14-, 1919- 1,338,003. Patented Apr. 27, 1 920.

WITNESS Z INVENTOR UNITED STATES NICKOLAS F. EGLER, OF CHICAGO, ILLINOIS.

HEATING-FURNACE.

Application filed June 14,

To a wizom it may concmvz:

lie it known that I, NIcKoLAs F. EGLER, a citizen of the United States, residing in hicago, in the county of Cook and State of Illinois. have invented a new and useful Improvement in Heating-Furnaces, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a vertical longitudinal section through a heating furnace embodying the invention.

Fig. 2 is a perspective view of one of the blocks for supporting the work pieces on the cooled tracks, and

Fig. 3 is a fragmentary plan view showing work pieces as carried on the tracks.

The present invention relates to heating furnaces and more particularly to heating furnaces in which the work pieces, such as ingots, billets, slabs, etc., are pushed through the furnace along water cooled tracks or skid pipes. One of the difficulties encountered in using this type of furnace is that the work pieces have cold spots in them where they rest on the water cooled tracks during their travel through the furnace. The work piece,sucl1 as a billet, is subject to the heat of the furnace around it during its travel therethrough, but the water cooled tracks upon which it rests conduct away the heat, leaving cold spots in the billet as it is delivered from the furnace. When the billet is rolled, these colder spaces are harder than the rest of the metal causing difficulty in rolling.

The object of the present invention is to prevent the cold spots in the work pieces passing through the heating furnace. To do this I provide blocks which support the work pieces on the cooled tracks and which travel through the furnace with the work pieces. These blocks prevent the work pieces from coming intocontact with the watercooled tracks and prevent the cold spots heretofore encountered by reason of such contact.

Referring to the embodiment of the invention illustrated in the drawings; reference numeral 2 indicates a heating furnace of the usual type, having a long chamber 3 through which the work pieces to be heated are pushed. The furnace is provided with the usual water cooled tracks or skid pipes 4, two in number, to support the work pieces Specification of Letters Patent.

Patented Apr. 27, 1920.

Serial No. 304,310.

5, here shown as slabs. The slabs 5 are pushed through the furnace by means of a hydraulic pusher 6, and are discharged down the incline 7 at the opposite ends of the furnace, as will be readily understood by those skilled in this art.

Instead of permitting the work pieces 5 to slide directly on the water cooled tracks 4, I provide supporting blocks 8 which are interposed between the tracks 4 and. the work pieces The preferred formof such block is shown in Fig. 2. The block 8 is hollowed at its bottom to form a saddle 9 which fits over the top of the pipe or track 4. The top of the block is formed with two steps or platforms 10 between which is located the upwardly extending lug 11. The blocks 8 are entirely separate from the water cooled tracks and the work pieces but arranged to be pushed along the tracks by the work pieces. The corners of the work pieces are supported on the steps 10 of the blocks 8. The lugs 11 project up between the work pieces and give the work pieces a bearing on the blocks 8, which carries the blocks along with the work pieces as they are pushed along the tracks 4. When the work pieces are placed on the tracks at the pusher or feeding end of the furnace, the blocks 8 are fitted under the work pieces on the tracks.

As can readily be seen, the blocks 8 prevent the work-pieces 5 from coming in contact with the water cooled tracks 4. While the-bottom of the blocks 8 will, of course, be kept cold by the contact with the water cooled tracks l, the upper part of the blocks which are in contact with the work pieces will be heated sufficiently to prevent cold spots in the work pieces.

The blocks 8 are discharged from the furnace with the work pieces, and may be then carried around-to the feeding-in end of the furnace and thus used over and over.

The blocks 8 are comparatively cheap and they may be used with the existing types of furnace.

While I have specifically disclosed the preferred embodiment of my invention, it is to be understood that the invention is not limited to its preferred embodiment, .but may be otherwise embodied within the scope of the following claims.

I claim:

1. The combination with a heating furnace having cooled tracks along which the work-pieces to be heated travel through the furnace-chamber, of work-supports immediately supported on and movable along said tracks, substantially as described.

- 2. The combination with a heating furnace having cooled tracks along which the work pieces to be heated travel through the furnace chamber, of a plurality of blocks interposed between the work pieces and the tracks, each block supporting the adjacent corners of two work pieces and arranged to be engaged and pushed along the tracks by the'work pieces, substantially as described.

3. The combination with a furnace having cooled tracks along which the work pieces to be heated travel through the furnace chamber, of blocks interposed between the tracks and work pieces having steps thereon for supporting the adjacent work pieces and provided with lugs extending upward between the work pieces, wherethe blocks are held between the work pieces and pushed along therewith, substantially as described.

4. The combination with a heating furnace having water cooled tracks along which the work pieces to be heated travel through the furnace, of blocks interposed between the tracks and the work pieces, each block supporting the adjacent corners of two work pieces and shaped so as to be engaged and pushed along by the work pieces, the bottom of the block being formed to ride along the track, substantially as described.

5. A block for supporting work-pieces in a heating furnace which is provided with cooled tracks, having its upper part formed to support the workpieces and be pushed heating along the tracks thereby, and having its lower part formed to travel along the tracks, substantially as described.

6. A block for supporting the work pieces in a heating furnace which is provided with water cooled tracks, having its upper part provided with surfaces to support the work pieces and with a lug to be engaged by the work pieces and cause them to push the block along the track and having its lower part formed to slide along the track substantially as described.

7. The combination with furnace having cooled tracks along which the work-pieces to be heated travel through the furnace chamber, of blocks for supporting the work-pieces on the tracks and arranged to be pushed along the tracks by the work-pieces, substantially as described.

8. The combination with a heating furnace having cooled tracks along which the work-pieces to be heated travel through the furnace chamber, of a plurality of unconnected and independent blocks for supporting the several work-pieces, said blocks being arranged to be moved along the tracks by the work-pieecs as they travel through the furnace chamber, substantially as de-.

scribed.

9. The combination with a heating furnace having cooled tracks and means for pushing the work-pieces to be heated along the tracks through the furnace chamber, of blocks for supporting the work-pieces on the tracks and arranged to be moved along the tracks by the travel of the workpieces, substantially as described.

In testimony whereof I have hereunto set my hand.

- NICKOLAS F. EGLER.

a heating 

